Extended Data Fig. 7: The empirical model describing the relationship between total N input and Nr losses.
From: Data-driven nitrogen management benchmarks support China’s wheat self-sufficiency by 2030
The exponential model described the relationship between total N input and N2O emission for the nation (a; n = 689), North China (b; n = 63), North China Plain (c; n = 337), and South China (d; n = 289). The exponential model described the relationship between total N input and NH3 volatilization for the nation (e; n = 454), North China (f; n = 57), North China Plain (g; n = 285), and South China (h; n = 112). The exponential model described the relationship between total N input and \({{\rm{NO}}}_{3}^{-}\) leaching for the nation (i; n = 287), North China (j; n = 48) for North China Plain (k; n = 127), and South China (l; n = 112). Shaded bands represent 95% confidence intervals, and P values were obtained from a one-sided F-test for the fitting lines. No adjustments were made for multiple comparisons.
